About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 37. Chapters: Archosaur, List of crurotarsans, Tarjadia, Vancleavea, Crocodylomorpha, Chanaresuchus, Erythrosuchus, Spinosuchus, Erythrosuchidae, Proterosuchus, Yonghesuchus, Variodens, Proterochampsidae, Thecodont, Avifilopluma, Neosuchia, Pseudosuchia, Archosauriformes, Archosauromorpha, Hyperodapedon, Avemetatarsalia, Notosuchus, Rhynchosaur, Koilamasuchus, Dorosuchus, Turfanosuchus, Teleocrater, Euparkeria, Tricuspisaurus, Archeopelta, Bentonyx, Azendohsaurus, Teyumbaita, Tasmaniosaurus, Trilophosaurus, Proterosuchidae, Razanandrongobe, Czatkowiella, Arctosaurus, Kalisuchus, Fodonyx, Cuyosuchus, Jaikosuchus, Isalorhynchus, Euparkeriidae, Rhynchosaurus, Fugusuchus, Osmolskina, Collilongus, Protecovasaurus, Miadanasuchus, Shansisuchus, Crosbysaurus, Proterosuchia, Tropidosuchus, Ankistrodon, Cryptoraptor, Cinizasaurus, Brasileosaurus, Chasmatosuchus, Lucianosaurus, Barberenachampsa, Cerritosaurus, Chalishevia, Qianosuchus, Mesosuchus, Proterochampsa, Garjainia, Avalonianus, Archosaurus, Vjushkovia, Philydrosaurus. Excerpt: Archosaurs are a group of diapsid amniotes whose living representatives consist of modern birds and crocodilians. This group also includes all extinct dinosaurs, many extinct crocodilian relatives, and pterosaurs. Archosauria, the archosaur clade, is a crown group that includes the most recent common ancestor of living birds and crocodilians. It includes two main clades: Crurotarsi, which includes crocodilians and their extinct relatives, and Avemetatarsalia, which includes pterosaurs and dinosaurs (the group to which birds belong). Archosaurs can be distinguished from other tetrapods on the basis of several synapomorphies, or shared characteristics first found in a common ancestor. The simplest and most widely-agreed synapomorphies of archosaurs include teeth set in sockets, antorbital and mandibular fenestr...
